Best way to add single coil pup to Schecter semihollow

[spankygtr]

I was thinking of installing maybe an SSL1 between the humbuckers on this axe, for more single coil options (guitar has push pull tone knobs which split the humbuckers already- looking to get an even more Fendery sounding funk tone).Would you install the single right in the middle, or closer to the bridge or neck pup?Also, would adding an additional mini toggle switch be the easiest way to achieve different pickup combinations with the new single, or would it be feasible to replace the main 3 way toggle with a 5 way?